科研之友
微信
新浪微博
Facebook
分享链接
摘要
Robust acenaphthoimidazolylidene palladium complexes have been demonstrated as highly efficient and general catalysts for Sonogashira cross-coupling reactions in excellent yields even at 0.01 mol% catalyst loadings in combination with 1 mol% IPr-Cu under mild reaction conditions. The outcomes highlight that, along with the steric bulky aspects, sigma-donor properties of the NHC ligands are also crucial to accelerate the transformations.
